Cube is actually not a game as such, but more of an engine for other people to build games on. A first person version is included in the game, but the real gem lies in the multiplayer option. A widely known freeware first person shooter like Cube does attract some attention, and there are always people online ready to play. This game differs from other games on here, as it is mostly an online game.
Curly's World of Freeware has donated a copy of this software and related data to the Classic PC Games catalog. Please visit their website for more information and discussion on this game.